Blar i forfatter "Jensvoll, Ingrid"

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    • Ecosystem drivers of an Arctic fox population at the western fringe of the Eurasian Arctic 

      Ims, Rolf Anker; Killengreen, Siw Turid; Ehrich, Dorothee; Flagstad, Øystein; Hamel, Sandra; Henden, John-André; Jensvoll, Ingrid; Yoccoz, Nigel Gilles (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
      The distribution of traditional breeding dens on the Varanger Peninsula (70–71°N) in northernmost Fennoscandia indicates that this area once harboured a large Arctic fox population. Early 20th century naturalists regarded the coastal tundra of the Fennoscandian Low Arctic to be a stronghold for the species. At the start of our research in 2004, however, the local Arctic fox population was ...

    • Fjellrev i Finnmark : årsrapport 2011 

      Killengreen, Siw Turid; Jensvoll, Ingrid; Henden, John-André; Hamel, Sandra; Ims, Rolf Anker; Mørk, Torill; Sarre, Arne Petter; Ørjebu, Alfred; Bye, Åshild; Knutsen, Kjartan (Research report; Forskningsrapport, 2012)

    • Fjellrev i Finnmark : Årsrapport 2013 

      Ims, Rolf Anker; Killengreen, Siw Turid; Jensvoll, Ingrid; Yoccoz, Nigel Gilles; Henden, John-André; Arriola, Aline; Mørk, Torill; Sarre, Arne Petter; Ørjebu, Alfred; Kristoffersen, Bjørn Hugo; Bye, Åshild (Research report; Forskningsrapport, 2013)
      Prosjekt Fjellrev i Finnmark har pågått siden 2004. Prosjektet har fra starten av hatt to målsetninger: Å gjøre grunnleggende forskning på økosystembetingelser som begrenser fjellrevenbestandens nåværende utbredelse og bestandsvekst i Øst-Finnmark spesielt, og i sub- og lav-Arktis generelt, med fokus på to hypoteser; a) mer uregelmessige og dempede smågnagersykler og b) øket konkurranse med ...

    • Fjellrev i Finnmark: Årsrapport 2009 

      Ims, Rolf Anker; Mørk, Torill; Sarre, Arne Petter; Killengreen, Siw Turid; Knutsen, Kjartan; Jensvoll, Ingrid; Yoccoz, Nigel Gilles; Ørjebu, Alfred; Henden, John-André (Research report; Forskningsrapport, 2009)

    • Naturfag utenfor klasserommet fra et Nordnorsk perspektiv 

      Killengreen, Siw Turid; Lundberg, Helene; Jensvoll, Ingrid; Höper, Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-30)
      This survey investigated how teachers in the northernmost parts of Norway use outdoor science teaching, and what they consider to be the most important challenges. Most teachers report that they do outdoor science activities a couple of times a year, more often in primary school than secondary school. The topics covered are largely related to biology during autumn and spring. Factors that inhibit ...

    • Planktivore vertical migration and shoaling under a subarctic light regime 

      Gjelland, Karl Øystein; Bøhn, Thomas; Horne, John K.; Jensvoll, Ingrid; Knudsen, Frank Reier; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2009-03-20)
      Visually foraging planktivorous fish are prey of visual predators, and their foraging behaviour may be affected by light levels both in terms of gain and risk. The large seasonal change in day length throughout a subarctic summer at 69°N was used to show the influence of light on diel vertical migration (DVM) and shoaling patterns in a planktivorous fish assemblage consisting of two species (<i>Coregonus ...

    • Under the snow: a new camera trap opens the white box of subnivean ecology 

      Soininen, Eeva M; Jensvoll, Ingrid; Killengreen, Siw Turid; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-14)
      Snow covers the ground over large parts of the world for a substantial portion of the year. Yet very few methods are available to quantify biotic variables below the snow, with most studies of subnivean ecological processes relying on comparisons of data before and after the snow cover season. We developed a camera trap prototype to quantify subnivean small mammal activity. The trap consists of a ...